Pipe-wrench.



PATENTE'D JULY. 31, 1908;

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PIPE WRENCH.

APPLICA.TION FILED NOV. 22, 1907.

Wifzjf s'es:

UNITED STEATES PATENT omnon,

JABEZ COOPER, or CARNEGIE, PENNSYLVANIA, ASSIGNOR'OF ONE-THIRD TO JABEz'oooPE'n, in, AND ONE-THIRD To GEORGE E. PFIZER, or CARNEGIE, PENNSYLVANIA;

PIPE-WRENCH.

Specification ofLetters Patent.

, Patented July 21, 1908.

Application filed. November 22, 1907. Serial No. 403,302, i

Zen of the United States, residing at Carneerate in the manner more fully ereinafter described.

ie, in the county of Allegheny and State of ennsylvania, have invented certain new and useful Improvements in Pipe-Wrenches, of which the iollowing is a specification, reference being had therein to the accor -panyin drawing. 1 i i y invention refers to an improved construction in pipe wrenches and has for its object to provideta simple, strong and econom ical device for the purpose, having a considerable range of adjustment for various sizes for which purpose one of the pivotally mounted elements of the deviceis capable of being set forwardly or backwardly by screw engagement with atrunnioned bearing nut pivotally mounted in the other clamping ele-' ment, and is constructed and ada ted to op- View showing a modified construction of the pivotal mounting.

The device comprises two mam. elements,

' each of which is provided with a gri pingterminal jawand an operating han 1e at the other end, one ofthe elements bein divided tolprovide'op posite sides within which is pivo-' ta the threaded stem of the other element. This construction is illustrated in the drawing, wherein 2 represents the shank or handle of one of said elements, having divided 0 pcsitelylocated sides 3, 3, referably for e integraliy from the metafof the hand e and bro ht together at each end of the elongatecI clearance space ,4 of said element, and terminatin .in arounded embracing jaw 5, against which the pipe 6 is held by the jaw of the other element. Said other element c0inprises ashank or handle 7 having a-threaded portion 8 engaging nut 9 which is plvotally mounted'in sides-3 by means of oppositely extending lugs or gudgeons 10, the nut and its bearing extension being preferably made integrally of one piece; At its other end threaded shank 7 is provided with a grippin .jaw 11 havin the teeth 12 at its outer e11 adapted to grip pipe 6, as shownin Fig. l and mounted a nut through. which passes for turning.

Nut 9 is, as will be understood, internally threaded for the reception of threaded portion 8 of-shank 7, by which construction the and when so adjusted and closed upon the pipe, the wrench will operate in a manner similar to-the ordinary Stillson wrench, .The advanta es of the construction result from the doub e-sided bearing for the pivoted nut 9 and in the threaded en agement therewith of shank 7' to provide for Iongitudinaladjustment, the pivotal mounting of thenut in the durability, with resulting simplicity and oheapness of cost.

In assembling the construction as abovedescribed and as shown in the principal figrated apart sufliciently far to ermit of the insertion of bearing lugs 10 in t eir receiving openings, after which the sides 3 ma be, then closed inwardly and there held unti set,

vious y heating the metal. The same result may be secured by casting the element 2 10of the nut and thereafter separating them by rotation of the nut to accom lish the same limited to the tudinal adjustment of the threaded stem 7 in the same manner described. i

I am aware thatp-rior to my invention detheir objects longitudinaladjustment of one of the gripping elementsfand am familiar Se tember 19, 1876, wherein thejawf is vidbd with threads at one side and is tened at the other. Such construction how ever necessitates the turning of the jaw at I to cooperate with jaw 5 to tightly engage it jaw 11.,may be advanced or retracted towards or from j aw 5 for varying sizes of pipes,

ures of the drawing, the sides 3 may be sepa-- audits embracing arms 3 around the bars 'plvotal mounting, and it will e understood -manner shown giving great strength and r theo eration being easily performed by preopening and closing of the jaws and the longivices have been patented having for one of with the patent of Stouffer No.182492, dated rohat- I v motion, and the bearing plug therein shank having end, substantially as set forth.

oppositely located bearing lugs right angles to the main shank a for the pur-. pose of making each adjustment by sliding 1s mounted in its peculiar. one-sided bearing. I do not broadly claim such construction, but

What I do claim and'desire to secure by Letters Patent is 1. A pipe wrench consisting of a main bifurcated shank having a gripping jaw and a handle, an internally'threaded nut having pivotally mounted in and between the bifurcated sides,-and. a threaded shank engaging said nut and provided with a gripping jaw and a handle portion, substantially as set forth.

2; In a pipe wrench, the combination of a divided sides with an intervening clearance opening, a terminal gripping jaw,'and an oppositely extending handle; an internally threaded nut within said clearance opening having oppositely extending bearing lugs pivctally mounted in said sides; anda threaded shank engaging said nut and provided with a gripping jaw at one end arranged for co6perat1on with said first-named jaw, and an operating handle at the other 3. In a me wrench, the combination of a main shanli having integrally separated sides and an intervening clearance opening, a terminal gripping jaw, and an oppositely extending handle; a nut mounted in said clearance opening provided with oppositely extending bearing lugs pivotally engaging said sides; and a threaded shank engaging said. nut and provided with a toothed gripping jaw at one end and an operating handle at the other end, substantially as set forth.

4. In a pi )e wrench, the combination with a main shanli havinga gripping terminal and a handle, a swiveled nut, and a threaded shank mounted therein having a gripping terminal and a handle; of pivoting bearings extending through the separated sides of the first-named shank and extending into said nut at opposite sides, substantially as set 1 forth.

In testimony whereof I affix my slgnaturc in presence of two witnesses.

JABEZ COOPER.

Witnesses C. M. GLARKE, CHAS. S. LEPLEYi 

